No rule to make target 'tools/objtool/objtool', needed by '/mnt/osdata/var/lib/dkms/bbswitch/0.8/build/bbswitch.o'. Stop.

likely because the objtool binary is missing from the kernel/headers packages. See also this Fedora bug tracker entry. On an unrelated note, Nvidia also doesn't build with the new kernel, but the error messages are not that obvious there, this may have another cause.